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$\int\left(2x+3\right)\left(2x-3\right)dx$
Learn how to solve integral calculus problems step by step online. Integrate the function (2x+3)(2x-3). Find the integral. Rewrite the integrand \left(2x+3\right)\left(2x-3\right) in expanded form. Expand the integral \int\left(4x^2-9\right)dx into 2 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int4x^2dx results in: \frac{4}{3}x^{3}.